Favored Freeware: Pianochords
Pianochords [is a Dashboard widget which] shows and plays all the musical chords you can think of. Just press a key on the keyboard to set the root of the chord and click the display to select the derived chord. It’s as simple as that!
Pros: Pianochords is an excellent tool for those of you who are studying and/or practicing music theory, music composition, or general music.
Cons: None significant.
Entries
James,
Do you know of something similar for guitars?
Craig, thanks for stopping by! Try GuitarChords and Chord Reference.